I am so sorry for your terrible loss. Swine flu is a serious threat and early detection is key.
I've read that 52% get the virus from inhaling it in some way and 30% get it from touching their own eyes, mouth, nose after their hands have been contaminated by touching a 3rd party object. Apparently the virus can live for 2 days on a surface. Be careful to wash your hands after touching 3rd party objects like door knobs , shopping cart handles, gas pump handles, pens, community use magazines, etc.
Again I am so sorry for the loss that you and your family have suffered.